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Old 03-19-2018, 08:35 PM   #1
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Class C spare tire carrier

Can anyone tell me why it is so hard to find a spare tire carrier for a Class C motorhome that mounts on a 4 inch bumper. I have seen several but the quality doesn't seem good. I pull a boat so according to what I am being told the Roadmaster carrier only works with pulling a tow.

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Old 03-22-2018, 04:15 AM   #2
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As a guess, most of the clamp on type spare tire carriers won't support the weight of a full size class c tire and rim. I think most are made for smaller/lighter spares. Also, Unless its a really strong bumper, the bumper might not support the weight of a full size, heavy spare bouncing around on the rear bumper.
If you have a class 3 rear hitch, look into the Curt Spare Tire Carrier. Heavy duty carrier, made for heavy use.

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Old 03-22-2018, 07:44 PM   #3
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Originally Posted by rrmccorm View Post
I pull a boat so according to what I am being told the Roadmaster carrier only works with pulling a tow.
I had a Roadmaster spare tire carrier on a previous motor home and wasn't told that I could only pull a TOAD. And I've seen them used with cargo trailers...but that doesn't mean it is okay...

In the instructions (See Here) the biggest concern is the Roadmaster reduces your hitch load rating by 1/3 of it's rated capacity. The tongue weight of your boat's trailer may be a problem. I'd call Roadmaster to confirm if it will work or not.
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Old 03-22-2018, 08:18 PM   #4
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I recently added a Curt bolt on 2 inch receiver and Curt heavy duty spare tire carrier that utilizes the bolt on receiver. I use the OEM installed receiver for towing Jeep. I also added a clamp to receiver to hold the tire carrier tightly to eliminate woble. My 4 inch bumper seems to be pretty stout and time will tell if it is up to the task. I have just completed first trip and all components held up fine. My spare tire/wheel combo weighs about 75 lbs total.
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class c, tire

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